Home / 45,759.06-63,135-31,423.20

Finding the Fourth Proportional to 45,759.06, 63,135 and 31,423.20

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Solution

The fourth proportional to 45,759.06, 63,135 and 31,423.20 is: 43,355.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,759.06 : 63,135 = 31,423.20 : x
  2. Step 2: Convert to fraction form
    45,759.06/63,135 = 31,423.20/x
  3. Step 3: Cross multiply
    45,759.06x = 63,135 × 31,423.20
  4. Step 4: Simplify right side
    45,759.06x = 1,983,903,732
  5. Step 5: Solve for x
    x = 1,983,903,732/45,759.06
  6. Step 6: Final answer
    x = 43,355.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.